ewe.ui
Class ImageControl

java.lang.Object
  ewe.ui.ControlBase
      ewe.ui.Control
          ewe.ui.Container
              ewe.ui.Canvas
                  ewe.ui.ImageControl

All Implemented Interfaces:

CellConstants, ControlConstants, EventListener, ImageRefresher, IScroll, ScrollClient, TimerProc, UIConstants

public class ImageControl

extends Canvas

Field Summary

static int	FIT If an image is being stretched or shrunk, this option tells it not to change the aspect ration.
static int	LIMIT_DECODED_SIZE When the setData() method is called with the encoded image bytes, this option tells the ImageControl to limit the decoded size if possible.
int	options By default this is STRETCH|SHRINK|FIT - telling the control to stretch or shrink the image into the display, but preserve the aspect ration.
static int	ROUGH_SCALING This options tells the ImageControl to scale the image using a rough scaling instead of smooth scaling.
boolean	showImageBackground If this is true then the control will have a background equal to the image background IF the image has a background color associated with it (e.g.
static int	SHRINK If an image is larger than the control, this option will shrink it.
static int	STRETCH If an image is smaller than the control, this option will expand it.

Fields inherited from class ewe.ui.Canvas

isFullScrollClient, origin, scrollPercent, virtualSize

Fields inherited from class ewe.ui.Container

closedFocus, cycleFocus, dontAutoScroll, dontFocusOnChildren

Fields inherited from class ewe.ui.Control

_debug, backGround, beforeRemoved, borderColor, borderStyle, borderWidth, children, columns, constraints, DoPaintMethod, dragging, dragResolution, dragTime, exitKeys, fieldTransfer, font, foreGround, haveNativePaint, height, holdDownPause, holdTick, hotKey, lastSelected, listeners, maxHeight, maxWidth, menuState, minHeight, minWidth, modifiers, MyClass, name, next, np, parent, penStatus, popupSound, popupSoundClip, preferredHeight, preferredWidth, prev, prompt, promptControl, rows, ss, standardBorder, standardEdge, startDragResolution, tags, tail, text, toolTip, width, x, y

Fields inherited from class ewe.ui.ControlBase

clipItems, clipObject, clipOwner, curPoint, currentPenEvent, debugControl, debugFlag, DidHoldDown, doubleBuffer, doubleClickTime, firstPress, globalDrawFlat, globalEditable, globalEnabled, globalPalmStyle, globalSmallControls, GotPenDown, PenIsOn, pressPoint, TAG_LAST_USER_DATA, TAG_USER_DATA, TAKE_FIRST_PRESS, unnamed, useNativeTextInput

Fields inherited from interface ewe.ui.IScroll

Higher, Horizontal, Lower, OPTION_INDICATOR_ONLY, PageHigher, PageLower, ScrollHigher, ScrollLower, TrackTo, Vertical

Fields inherited from interface ewe.ui.UIConstants

BDR_DOTTED, BDR_INNER, BDR_NOBORDER, BDR_OUTER, BDR_OUTLINE, BDR_RAISEDINNER, BDR_RAISEDOUTER, BDR_SUNKENINNER, BDR_SUNKENOUTER, BF_BOTTOM, BF_BOTTOMLEFT, BF_BOTTOMRIGHT, BF_BUTTON, BF_DIAGONAL, BF_DIAGONAL_ENDBOTTOMLEFT, BF_DIAGONAL_ENDBOTTOMRIGHT, BF_DIAGONAL_ENDTOPLEFT, BF_DIAGONAL_ENDTOPRIGHT, BF_EXACT, BF_FLAT, BF_LEFT, BF_MIDDLE, BF_MONO, BF_PALM, BF_RECT, BF_RIGHT, BF_SOFT, BF_SQUARE, BF_TOP, BF_TOPLEFT, BF_TOPRIGHT, EDGE_BUMP, EDGE_ETCHED, EDGE_RAISED, EDGE_SUNKEN

Fields inherited from interface ewe.ui.CellConstants

BORDER, BOTTOM, CELLFLAG, CELLMASK, CENTER, CONTROLMASK, DONTCHANGE, DONTFILL, DONTSTRETCH, EAST, FILL, FIXEDSIZE, GROW, HCENTER, HCONTRACT, HEXPAND, HFILL, HGROW, HSHRINK, HSTRETCH, INITIALLY_CLOSED, INITIALLY_MINIMIZED, INITIALLY_PREFERRED_SIZE, INSETS, LEFT, MAXIMUMSIZE, MINIMUMSIZE, NORTH, NORTHEAST, NORTHWEST, PREFERREDSIZE, RECT, RIGHT, SOUTH, SOUTHEAST, SOUTHWEST, SPAN, TEXTSIZE, TOP, VCENTER, VCONTRACT, VEXPAND, VFILL, VGROW, VSHRINK, VSTRETCH, WEST

Fields inherited from interface ewe.ui.ControlConstants

All, AlwaysEnabled, AlwaysRecalculateSizes, ByDeferredMouse, ByDeferredPen, ByFrameChange, ByKeyboard, ByMouse, ByPen, ByRequest, CalculatedSizes, Disabled, DisablePopupMenu, DisplayOnly, Down, DrawFlat, Flag, ForceResize, HasData, Invisible, KeepImage, KeepSIP, Left, MakeMenuAtLeastAsWide, Maximize, Minimize, MouseSensitive, NoFocus, NotAnEditor, NotEditable, PaintDataOnly, PaintOutsideOnly, PenTransparent, PreferredSizeOnly, Right, SendUpKeyEvents, SendUpPenEvents, ShowSIP, ShrinkToNothing, SmallControl, SpecialBackground, TakeControlEvents, TakesKeyFocus, Transparent, Up, WantDrag, WantHoldDown

Fields inherited from interface ewe.fx.ImageRefresher

KEEP_VISIBLE

Constructor Summary

ImageControl(IImage what)

Method Summary

protected void	calculateSizes() Override this to calculate the preferred, minimum and maximum size of your control.
void	doPaint(Graphics g, Rect area)
protected void	formClosing() This is called to indicate that the Form is about to close and it causes a FormClosed event to be posted.
IImage	getImage()
void	setData(Object data)
void	setImage(IImage im)
void	shown()

Methods inherited from class ewe.ui.Canvas

canGo, canScreenScroll, checkScrolls, doBorder, doScroll, fixOrigin, getActual, getBuffer, getCurrent, getDisplayedSize, getMySize, getPercent, getScrollablePanel, getScrollClient, getVisible, getVisibleArea, needScrollBar, onScroll, onSetOrigin, reduceClip, scroll, scroll, scrollToVisible, setOrigin, updateScrollServer

Methods inherited from class ewe.ui.Container

_paintChildren, add, addDirectly, containerHasFocus, dismantle, dismantle, doHotKey, findChild, focusFirst, focusFirst, focusOnContainer, focusOnData, getChildren, getChildrenBackwards, getFirstFocus, getNextKeyFocus, gotFocus, lostFocus, remove, removeAll, repaintDataNow, takeFocus, takePromptControl

Methods inherited from class ewe.ui.Control

acceptsData, activate, addListener, addTimer, amOnTopFrame, calculateTextSize, cancelCut, cancelHoldDown, canEdit, chainDataChange, change, checkClipboardOperations, checkExitKey, checkMenu, checkMenuKey, checkModifiers, checkPenTransparent, clearTag, clipboardToString, clipboardTransfer, closeMenu, contains, contains, createGraphics, dataAccepted, dataBeingRemoved, dataDraggedOff, dataDraggedOver, dataDraggedOver, dataDroppedOn, dataTransferCancelled, deactivate, defaultTo, doAction, doActionKey, doBackground, doMenu, dontAcceptDrop, doPaintChildren, doPaintChildren, doPaintChildren, doPaintData, doPaintData, doShowMenu, dragged, exitEntry, fillBackground, fromClipboard, fromField, fromField, getAllDescendants, getAllSubControls, getBackground, getClipboardMenu, getClipObject, getControlBuffer, getControlBuffer, getDataRect, getDataToCopy, getDataToDragAndDrop, getDim, getDisplayText, getDragAndDropContext, getFont, getFontMetrics, getFontMetrics, getForeground, getFrame, getFrameOrContainer, getGraphics, getLastSelected, getLocation, getMaximumSize, getMenu, getMinimumSize, getModifiers, getNext, getParent, getPasswordCharacter, getPosInFrame, getPosInParent, getPreferredSize, getPrompt, getPromptText, getRect, getRect, getServer, getSize, getSizes, getSubControls, getTag, getText, getToolTip, getWindow, hasModifier, hasPopupFormAttached, hasTag, inheritModifiers, isChildOf, isModal, isOnMe, isSomeonesHotKey, make, makeFrameTopMost, makeHot, menuIsActive, modify, modifyAll, modifyAll, notifyAction, notifyDataChange, notifyDataChange, notNative_doPaintChildren, oldButWorksDoPaintChildren, oldPaintChildren, oldPostEvent, onControlEvent, onEvent, onKeyEvent, onLabelPenEvent, onPaint, onPenEvent, paintBackground, paintChildren, penClicked, penDoubleClicked, penHeld, penPressed, penReleased, penRightReleased, popupBeep, popupMenuClosed, popupMenuEvent, popupMenuEvent, postEvent, recalculatePreferredSize, redisplay, refresh, removeListener, removeTimer, repaint, repaintNow, repaintNow, repaintNow, requestPaint, requestResizeTo, resetRect, resizeTo, restore, scrollAndRepaint, sendToListeners, set, setBorder, setCell, setClipObject, setControl, setCursor, setFixedSize, setFont, setHotKey, setHotKey, setLocation, setMaximumSize, setMenu, setMinimumSize, setPreferredSize, setPromptControl, setRect, setRect, setServer, setTag, setTags, setText, setTextSize, setToolTip, show, standardOnKeyEvent, startDragAndDrop, startDragAndDrop, startDragging, stopDragging, takeData, takeFromClipboard, testDim, ticked, toClipboard, toField, toField, toString, toTextData, transferPenPress, transferPenPress, tryDragAndDrop, tryNext, tryStartMenu, updateData, willAcceptDrop, willShowFrame

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode

Methods inherited from interface ewe.ui.ScrollClient

getServer, setServer

Field Detail

STRETCH

public static final int STRETCH

If an image is smaller than the control, this option will expand it.

See Also:

Constant Field Values

SHRINK

public static final int SHRINK

If an image is larger than the control, this option will shrink it.

See Also:

Constant Field Values

FIT

public static final int FIT

If an image is being stretched or shrunk, this option tells it not to change the aspect ration.

See Also:

Constant Field Values

LIMIT_DECODED_SIZE

public static final int LIMIT_DECODED_SIZE

When the setData() method is called with the encoded image bytes, this option tells the ImageControl to limit the decoded size if possible.

See Also:

Constant Field Values

ROUGH_SCALING

public static final int ROUGH_SCALING

This options tells the ImageControl to scale the image using a rough scaling instead of smooth scaling. Rough scaling is faster than smooth scaling.

See Also:

Constant Field Values

options

public int options

By default this is STRETCH|SHRINK|FIT - telling the control to stretch or shrink the image into the display, but preserve the aspect ration.

showImageBackground

public boolean showImageBackground

If this is true then the control will have a background equal to the image background IF the image has a background color associated with it (e.g. PNG images allow a background color to be specified).

Constructor Detail

ImageControl

public ImageControl(IImage what)

Method Detail

getImage

public IImage getImage()

Overrides:

getImage in class Control

setImage

public void setImage(IImage im)

shown

public void shown()

Overrides:

shown in class Control

formClosing

protected void formClosing()

Description copied from class: Control

This is called to indicate that the Form is about to close and it causes a FormClosed event to be posted. If you override it you should call super.formClosing(). There is no way of stopping the Form closing at this point.

Overrides:

formClosing in class Control

setData

public void setData(Object data)

doPaint

public void doPaint(Graphics g,
                    Rect area)

Overrides:

doPaint in class Control

calculateSizes

protected void calculateSizes()

Description copied from class: Control

Override this to calculate the preferred, minimum and maximum size of your control. This is only called once unless the modifier flag AlwaysRecalculateSizes is true. During the calculation you will set the variables preferredWidth, preferredHeight, etc. directly.

Overrides:

calculateSizes in class Control